CAPTCHA & Bot Protection
3,100 of the 1,000,000 top sites in our Tranco top-1M census run AWS WAF CAPTCHA (0.3%). Amazon's CAPTCHA challenge product, part of AWS WAF's bot-mitigation features. Detection is homepage-level HTML/header fingerprinting, so a site can run AWS WAF CAPTCHA on other pages without it showing here.
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | amazon.com | #25 (Tranco) | Find emails |
| 2 | imdb.com | #237 (Tranco) | Find emails |
| 3 | appsflyer.com | #302 (Tranco) | Find emails |
| 4 | amazon.co.uk |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| defencensnsource.com | #514,821 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| wowtravelsindia.com | #515,031 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| counties.org | #515,315 | Amazon CloudFront, Amazon S3, Apple Pay + 18 more | Find emails |
| #313 (Tranco) |
| Find emails |
| 5 | checkpoint.com | #338 (Tranco) | Find emails |
| nsnorbit.com | #515,708 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| integratedaircraftparts.com | #515,768 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| ecda.gov.sg | #516,496 | AWS WAF, Akamai Edge DNS, Amazon (ACM) + 1 more | Find emails |
| espnfc.us | #516,502 | AWS WAF, Amazon CloudFront, Amazon Route 53 + 1 more | Find emails |
| parkrun.ie | #517,272 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| almutawaph.com.kw | #520,387 | AWS WAF, Amazon (ACM), Amazon Web Services + 1 more | Find emails |
| nsntarget.com | #520,835 | AWS WAF, Amazon (ACM), Amazon Web Services | Find emails |
| manyvets.com | #520,987 | AWS WAF, Amazon (ACM), Amazon CloudFront + 2 more | Find emails |
| helperchoice.com | #521,397 | AWS WAF, Amazon (ACM), Amazon Route 53 + 1 more | Find emails |
| signaturemarket.co | #521,461 | AWS WAF, Amazon Route 53, Amazon Web Services + 1 more | Find emails |
| new886.ec | #521,693 | ASP.NET, Amazon (ACM), Amazon CloudFront + 8 more | Find emails |
| hfmdk-frankfurt.de | #522,038 | AWS WAF, Amazon (ACM), Amazon CloudFront + 3 more | Find emails |
| dxlogistics.com | #523,208 | AWS WAF, Amazon CloudFront, DigiCert + 1 more | Find emails |
| dontalia.it | #525,159 | AWS WAF, Amazon CloudFront, Amazon Route 53 + 2 more | Find emails |
| episaveurs.fr | #525,163 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| dealsdeluxe.club | #525,694 | AWS WAF, Amazon (ACM), Amazon CloudFront + 1 more | Find emails |
| eventcube.io | #526,465 | AWS Lambda, AWS WAF, Amazon CloudFront + 19 more | Find emails |
| bamfords-auctions.co.uk | #527,770 | AWS WAF, Amazon (ACM), Amazon Web Services + 1 more | Find emails |
| ondeck.com.au | #528,424 | AWS WAF, Amazon (ACM), Amazon Web Services + 2 more | Find emails |
| espnf1.com | #529,221 | AWS WAF, Amazon CloudFront | Find emails |
| skillsfuture.gov.sg | #529,495 | AWS WAF, Akamai Edge DNS, Amazon (ACM) + 1 more | Find emails |
| oasis-stores.com | #531,275 | AB Tasty, Amazon (ACM), Amazon CloudFront + 3 more | Find emails |
From the Crawlora Website Tech Stack Dataset, a homepage-level fingerprint of a 1,000,000-domain Tranco top-1M census (run top1m-2026-08-25-full-v2), snapshot August 29, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →